Method of manufacturing sheets of gelatin



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- Belgium, No. 230,776, dated 2 July,"1920;

Norway, No. 20,832, dated 28 June, 1920; Sweden, No. 3,883, dated 30June, 1920; Denmark, No. 27,899, dated 28 June, 1920; Switzerland, No.129,588, dated-6th August, 1920; France, No. 129,588,, dated 2nd uly,1920,) I of which the following is a specification.

My invention relates to an .improved method of manufacturing thinsheets: of

edible gelatin and thin or very thin, transparent, coloured or opaquesheets of gelatin.

' such as are used for wrappingsfor bonbons,

for transparent envelopes and for coverings employed in the topsof'boxes .ofIconfectionery, chocolates and the like.

The usual method employed for the production of edible sheetgelatin isto out the sheetsfrom a block of gelatin in a semiplastic condition. Aseries of sheets are pro- 1 duced simultaneously from the block by meansof a. frame witlra series of taut wires spaced apart accordin to thethickness of the "sheet required. he semi-plastic sheet thus produced isplaced to dry and harden upon a wire netting or twine netting supportand thus obtains the crinkled appearance familiar-to the public intheedi esheetgelatin of commerce. The thickness'of the gelatin thusproduced is governed partly by the quanlity of the gelatin operated uponand partly by the necessary plastic con-. ditionof the sheets when theyarelplaced' upon the drying frames and conse uently only comparativelythick sheets can e produced. I

My invention is designed to provide means whereby thin or very thingelatin sheets can be manufactured of considerable length and of varyingdegress of texture and thickness, colour or opacity without the use ofoxgall. paraflin, 011 or talc such sheets being more flexible and lessliable to alteration in action 0 sions for the purpose's'for w ich thesheetsv Specification of Letters Patent; Patented F B 21, 1922.,vApplication med m a mac. s'emrncnseasaa a varnished, enamelled or'japanned'to a low of the sheet of gelatin formed thereon when dryingunder tension on the'curved surface of the wheel, becoming detached andconsequently stripped ofl without the necessity formechanical strippingmeans such as a knife. The gelatin employed to form the film orr' 1sheet is dissolve in-water, The solution lswarmed and spread in an evenamount over the surface of the len h of flexible material forming thefoun ation for the gelatin film or sheet. The material is then woundround a d 'ng wheel and remains stationar while ing submitted to thewarm dry air until all the p'arent moisture is removed.- After; a.convenient intervalfof time .(suitably twenty-four hours) the strippedin the form of a film or the g azed face of the strip of material overwhich it-has been spread and wound on to a, reel or cut into suitablelen hsor dimenare to be em loyed.) Y '86 Instead 0 .being wound upon adrying wheel short lengths of flexible material can be hung up in anyconvenient manner to dry afterhaving been coated with. gelatin.- -What Iclaim is: 1. The method of manufacturing gelatin sheets in which liquidelatinv is 'firstspread over a flexible foundation and said foundationthen bent overa' curved surface and the film of gelatin dried thereonunder ten sion on said curved surface' and finally stripped therefromwithout the use of me- 5 chanical'stripping means. g 2. The method ofmanufacturing gelatin sheets in which liquid gelatin is firsts read overa flexible length .of material an said material then bent over a dryingwheel and the film of gelatin dried thereon under tension on the curvedsurface. oftsaid wheel and-finally stripped therefrom without the useofimeehanical stripping means;

latin reet from 80 emme 3. A method of manufacturing gelatin until themoisture is removed from the sheets in which liquid. gelatin is firstspread gelatin film and which is finally stripped over a flexible lengthof glazed material therefrom Without the use of mechanical 1'0) and saidmaterial thenwound upon a dr'ystripping means.

5 ing wheel and the film of gelatin when under In testimony whereof ihave signed my tensiohon the curved surface of said wheel name to thisspecification. submitted to the action of warm dry air Elli. A MCQUITTY.

